J Korean Soc Environ Eng. 2014; 36(12): 843-850.
Published online 2014 December 31.
Development of Inorganic Binder Using Ash from Sewage Sludge Incinerator I
Department of Environmental Science, Yongin University
Received 2014 September 30; Accepted 2014 December 26.
ABSTRACT
This study investigated to recycle ash produced in the sewage sludge incinerator using reduction/stabilization. Nonsintering process was performed by binding cement, geobond and sand mixed with sewage sludge ash (SSA). Results showed that unconfined compressive strength could be obtained components of sewage sludge ash. it exceeded more than double score of the 22.54 Mpa (229.7 kg/cm2) Korean standard. chemical ingradients of the sewage sludge ash was mainly composed of SiO2, Al2O3, Fe2O3, CaO and others, which were similar to those of the each binders consisting cement and geobond. microstructure of solidified speceimen for the different admixture was related to the compressive strength according to SEM analysis. optimum mixing range of the sewage sludge ash to inorganic binder was found to be 10~40% which can widly safely regulate the confined compressive strength. This study revealed the sewage sludge ash can be partial replacement of the inorganic binder for recycling.
Keywords :
Inorganic Binder, Geobond, Sewage Sludge Ash (SSA), Paste, Mortar, Recycling Construction Material
